Time-Varying Metasurfaces
Researchers at Purdue University have developed a time-varying, optical metasurface technology to obtain a new class of planar optical devices, which includes tunable versions of planar devices obtained by space variant metasurfaces. The impact of time-varying metasurfaces exceeds tunable devices and new physical effects are obtained. Time-varying metasurfaces exhibit a more universal form of Snell's relation not limited by Lorentz reciprocity, enabling the building of magnetic-free optical isolators. In addition, these metasurfaces allow for wavelength modulation, which can be utilized to build frequency or phase modulators, or they can be used to control energy eigenstates of single photons in quantum experiments
Time-variant phase modalityEnables magnetic-free optical isolators Wavelength modulation
Tunable planar lensesOptical communications Laser cooling
Alex KildishevPurdue nanoHubPurdue Electrical and Computer Engineering
United States
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美国
